The golden ratio should not need any introduction to those who have studied math and design in school. Some designers apply these mathematical concepts to come up with more visually appealing works. This infographic from companyfolders.com covers a few golden ratio facts:
Groundfridge is an innovative take on the traditional root cellar. It meets the requirements of people with their own vegetable garden, who choose to live in a modern and self-sustaining way.
How to Build A Shelter | Survival Prepping Ideas, Survival Gear, Skills & Emergency Preparedness Tips by Survival Life http://survivallife.com/2014/06/02/conquer-the-frontier-like-an-american-pioneer/
How To Build A Shed + Free Videos + Cheap Shed Plans
Idea for treehouse stair platform
On the Creative Market Blog - How to Design a Logo: 50 Tutorials and Pro Tips
50 Plans, including this Gorgeous Two-Story Treehouse. I want this! Maybe for future grandkids?